Csharp/C Sharp by API/System.Drawing/Graphics
Содержание
- 1 Graphics.Clear
- 2 Graphics.CopyFromScreen
- 3 Graphics.DashCap
- 4 Graphics.Dispose()
- 5 Graphics.DpiX
- 6 Graphics.DpiY
- 7 Graphics.DrawArc
- 8 Graphics.DrawBeziers
- 9 Graphics.DrawEllipse
- 10 Graphics.DrawIcon(Icon icon, int x, int y)
- 11 Graphics.DrawImage(Image i, int x, int y);
- 12 Graphics.DrawImage(Image img, int x, int y, int width, int height)
- 13 Graphics.DrawImage(Image, Points[])
- 14 Graphics.DrawImage(im, rec, recPart, GraphicsUnit.Pixel)
- 15 Graphics.DrawLine(Pen p, int x0,int y0, int x1, int y1)
- 16 Graphics.DrawLine(Pen,Point point1, Point point2)
- 17 Graphics.DrawLines(Pen pen, Point[] points)
- 18 Graphics.DrawPie
- 19 Graphics.DrawRectangle
- 20 Graphics.DrawRectangles
- 21 Graphics.DrawString
- 22 Graphics.EnumerateMetafileProc
- 23 Graphics.FillClosedCurve
- 24 Graphics.FillEllipse
- 25 Graphics.FillEllipse(Brush brush,int x, int y,int width,int height)
- 26 Graphics.FillPath(Brushes.AliceBlue, myPath);
- 27 Graphics.FillPolygon
- 28 Graphics.FillRectangle
- 29 Graphics.FillRectangles
- 30 Graphics.FillRegion
- 31 Graphics.FromHwnd()
- 32 Graphics.FromImage
- 33 Graphics.InterpolationMode
- 34 Graphics.MeasureString
- 35 Graphics.PageScale
- 36 Graphics.PageUnit
- 37 Graphics.PixelOffsetMode
- 38 Graphics.ReleaseHdc
- 39 Graphics.RotateTransform
- 40 Graphics.ScaleTransform
- 41 Graphics.SetClip
- 42 Graphics.SetClip(path, (CombineMode)miCombineMode.Index)
- 43 Graphics.SmoothingMode
- 44 Graphics.TextRenderingHint
- 45 Graphics.Transform
- 46 Graphics.TranslateClip
- 47 Graphics.TranslateTransform
- 48 Graphics.VisibleClipBounds
Graphics.Clear
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class RandomClear: Form {
public static void Main()
{
Application.Run(new RandomClear());
}
public RandomClear()
{
Text = "Random Clear";
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics graphics = pea.Graphics;
Random rand = new Random();
graphics.Clear(Color.FromArgb(rand.Next(256),
rand.Next(256),
rand.Next(256)));
}
}
</source>
Graphics.CopyFromScreen
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; using System.Windows.Forms.VisualStyles; using System.Drawing.Drawing2D; public class Form1 : Form {
private System.Windows.Forms.Panel panel1;
private System.Windows.Forms.Button cmdCapture;
private System.Windows.Forms.PictureBox pictureBox1;
public Form1() {
InitializeComponent();
}
private void cmdCapture_Click(object sender, EventArgs e)
{
if (pictureBox1.Image != null) pictureBox1.Image.Dispose();
Bitmap bmp = new Bitmap(Screen.PrimaryScreen.Bounds.Width, Screen.PrimaryScreen.Bounds.Height);
Graphics g = Graphics.FromImage(bmp);
g.CopyFromScreen(0, 0, 0, 0, bmp.Size);
g.Dispose();
pictureBox1.Image = bmp;
pictureBox1.Size = bmp.Size;
}
private void InitializeComponent()
{
this.panel1 = new System.Windows.Forms.Panel();
this.cmdCapture = new System.Windows.Forms.Button();
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.panel1.SuspendLayout();
((System.ruponentModel.ISupportInitialize)(this.pictureBox1)).BeginInit();
this.SuspendLayout();
this.panel1.Anchor = ((System.Windows.Forms.AnchorStyles)((((System.Windows.Forms.AnchorStyles.Top | System.Windows.Forms.AnchorStyles.Bottom)
| System.Windows.Forms.AnchorStyles.Left)
| System.Windows.Forms.AnchorStyles.Right)));
this.panel1.AutoScroll = true;
this.panel1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.panel1.Controls.Add(this.pictureBox1);
this.panel1.Location = new System.Drawing.Point(8, 8);
this.panel1.Size = new System.Drawing.Size(270, 233);
this.cmdCapture.Anchor = ((System.Windows.Forms.AnchorStyles)((System.Windows.Forms.AnchorStyles.Bottom | System.Windows.Forms.AnchorStyles.Right)));
this.cmdCapture.Location = new System.Drawing.Point(169, 249);
this.cmdCapture.Size = new System.Drawing.Size(110, 30);
this.cmdCapture.Text = "Capture Screen";
this.cmdCapture.UseVisualStyleBackColor = true;
this.cmdCapture.Click += new System.EventHandler(this.cmdCapture_Click);
this.pictureBox1.Location = new System.Drawing.Point(0, 0);
this.pictureBox1.Size = new System.Drawing.Size(100, 50);
this.pictureBox1.TabStop = false;
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(290, 288);
this.Controls.Add(this.cmdCapture);
this.Controls.Add(this.panel1);
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.Text = "Screen Capture";
this.panel1.ResumeLayout(false);
((System.ruponentModel.ISupportInitialize)(this.pictureBox1)).EndInit();
this.ResumeLayout(false);
}
[STAThread]
static void Main()
{
Application.EnableVisualStyles();
Application.SetCompatibleTextRenderingDefault(false);
Application.Run(new Form1());
}
}
</source>
Graphics.DashCap
<source lang="csharp"> using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class PenDashCaps: Form {
MenuItem miChecked;
public static void Main()
{
Application.Run(new PenDashCaps());
}
public PenDashCaps()
{
ResizeRedraw = true;
Menu = new MainMenu();
Menu.MenuItems.Add("&Width");
int[] aiWidth = { 1, 2, 5, 10, 15, 20, 25 };
foreach (int iWidth in aiWidth)
Menu.MenuItems[0].MenuItems.Add(iWidth.ToString(),
new EventHandler(MenuWidthOnClick));
miChecked = Menu.MenuItems[0].MenuItems[0];
miChecked.Checked = true;
}
void MenuWidthOnClick(object obj, EventArgs ea)
{
miChecked.Checked = false;
miChecked = (MenuItem) obj;
miChecked.Checked = true;
Invalidate();
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Pen pen = new Pen(clr, Convert.ToInt32(miChecked.Text));
pen.DashStyle = DashStyle.DashDotDot;
foreach (DashCap dc in Enum.GetValues(typeof(DashCap)))
{
pen.DashCap = dc;
grfx.DrawLine(pen, cx / 8, cy / 4, 7 * cx / 8, cy / 4);
grfx.TranslateTransform(0, cy / 4);
}
}
}
</source>
Graphics.Dispose()
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class BlockOut: Form {
bool bBlocking, bValidBox;
Point ptBeg, ptEnd;
Rectangle rectBox;
public static void Main()
{
Application.Run(new BlockOut());
}
protected override void OnMouseDown(MouseEventArgs mea)
{
if (mea.Button == MouseButtons.Left)
{
ptBeg = ptEnd = new Point(mea.X, mea.Y);
Graphics grfx = CreateGraphics();
grfx.DrawRectangle(new Pen(ForeColor), Rect(ptBeg, ptEnd));
grfx.Dispose();
bBlocking = true;
}
}
protected override void OnMouseMove(MouseEventArgs mea)
{
if (bBlocking)
{
Graphics grfx = CreateGraphics();
grfx.DrawRectangle(new Pen(BackColor), Rect(ptBeg, ptEnd));
ptEnd = new Point(mea.X, mea.Y);
grfx.DrawRectangle(new Pen(ForeColor), Rect(ptBeg, ptEnd));
grfx.Dispose();
Invalidate();
}
}
protected override void OnMouseUp(MouseEventArgs mea)
{
if (bBlocking && mea.Button == MouseButtons.Left)
{
Graphics grfx = CreateGraphics();
rectBox = Rect(ptBeg, new Point(mea.X, mea.Y));
grfx.DrawRectangle(new Pen(ForeColor), rectBox);
grfx.Dispose();
bBlocking = false;
bValidBox = true;
Invalidate();
}
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
if (bValidBox)
grfx.FillRectangle(new SolidBrush(ForeColor), rectBox);
if (bBlocking)
grfx.DrawRectangle(new Pen(ForeColor), Rect(ptBeg, ptEnd));
}
Rectangle Rect(Point ptBeg, Point ptEnd)
{
return new Rectangle(Math.Min(ptBeg.X, ptEnd.X),
Math.Min(ptBeg.Y, ptEnd.Y),
Math.Abs(ptEnd.X - ptBeg.X),
Math.Abs(ptEnd.Y - ptBeg.Y));
}
}
</source>
Graphics.DpiX
<source lang="csharp">
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Imaging;
public class Form1 : System.Windows.Forms.Form
{
public Form1()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Text = "";
this.Resize += new System.EventHandler(this.Form1_Resize);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
}
static void Main()
{
Application.Run(new Form1());
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
Bitmap bmp = new Bitmap("winter.jpg");
g.DrawImage(bmp, 0, 0);
Console.WriteLine("Screen resolution: " + g.DpiX + "DPI");
Console.WriteLine("Image resolution: " + bmp.HorizontalResolution + "DPI");
Console.WriteLine("Image Width: " + bmp.Width);
Console.WriteLine("Image Height: " + bmp.Height);
SizeF s = new SizeF(bmp.Width * (g.DpiX / bmp.HorizontalResolution),
bmp.Height * (g.DpiY / bmp.VerticalResolution));
Console.WriteLine("Display size of image: " + s);
}
private void Form1_Resize(object sender, System.EventArgs e)
{
Invalidate();
}
}
</source>
Graphics.DpiY
<source lang="csharp">
using System; using System.Drawing; using System.Windows.Forms;
class DotsPerInch: Form {
public static void Main()
{
Application.Run(new DotsPerInch());
}
public DotsPerInch()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
grfx.DrawString(String.Format("DpiX = {0}\nDpiY = {1}",
grfx.DpiX, grfx.DpiY),
Font, new SolidBrush(clr), 0, 0);
}
}
</source>
Graphics.DrawArc
<source lang="csharp">
using System; using System.Drawing; using System.Windows.Forms;
class LineArcCombo: Form {
public static void Main()
{
Application.Run(new LineArcCombo());
}
public LineArcCombo()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Pen pen = new Pen(clr, 25);
grfx.DrawLine(pen, 25, 100, 125, 100);
grfx.DrawArc (pen, 125, 50, 100, 100, -180, 180);
grfx.DrawLine(pen, 225, 100, 325, 100);
}
}
</source>
Graphics.DrawBeziers
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class BezierArt: Form {
public static void Main()
{
Application.Run(new BezierArt());
}
public BezierArt()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,200, 200);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Pen pen = new Pen(clr);
PointF[] aptf = new PointF[4];
int iNum = 100;
for (int i = 0; i < iNum; i++)
{
double dAngle = 2 * i * Math.PI / iNum;
aptf[0].X = cx / 2 + cx / 2 * (float) Math.Cos(dAngle);
aptf[0].Y = 5 * cy / 8 + cy / 16 * (float) Math.Sin(dAngle);
aptf[1] = new PointF(cx / 2, -cy);
aptf[2] = new PointF(cx / 2, 2 * cy);
dAngle += Math.PI;
aptf[3].X = cx / 2 + cx / 4 * (float) Math.Cos(dAngle);
aptf[3].Y = cy / 2 + cy / 16 * (float) Math.Sin(dAngle);
grfx.DrawBeziers(pen, aptf);
}
}
}
</source>
Graphics.DrawEllipse
<source lang="csharp">
using System; using System.Drawing; using System.Windows.Forms;
class TryOneInchEllipse: Form {
public static void Main()
{
Application.Run(new TryOneInchEllipse());
}
public TryOneInchEllipse()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
grfx.DrawEllipse(new Pen(clr), 0, 0, grfx.DpiX, grfx.DpiY);
}
}
</source>
Graphics.DrawIcon(Icon icon, int x, int y)
<source lang="csharp">
/* GDI+ Programming in C# and VB .NET by Nick Symmonds Publisher: Apress ISBN: 159059035X
- /
using System; using System.Drawing; using System.Drawing.Imaging; using System.Drawing.Drawing2D; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace IconImageDraw_c {
/// <summary>
/// Summary description for IconImageDraw.
/// </summary>
public class IconImageDraw : System.Windows.Forms.Form
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public IconImageDraw()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
this.MouseMove += new MouseEventHandler(this.DrawBox);
this.MouseDown += new MouseEventHandler(this.StartBox);
this.MouseUp += new MouseEventHandler(this.EndBox);
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
//
// IconImageDraw
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(492, 373);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedSingle;
this.MinimizeBox = false;
this.Name = "IconImageDraw";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "IconImageDraw";
this.Load += new System.EventHandler(this.IconImageDraw_Load);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
///
//"R" holds the image, "Box" is the new image home currently being
//drawn by holding the mouse down and dragging
private Rectangle R = Rectangle.Empty;
private Rectangle Box = Rectangle.Empty;
private Image I = Image.FromFile("sample.jpg");
private Icon ThisIcon = new Icon("usa.ico");
private bool OK2Paint = false;
[STAThread]
static void Main()
{
Application.Run(new IconImageDraw());
}
private void IconImageDraw_Load(object sender, System.EventArgs e)
{
}
protected override void OnPaint ( PaintEventArgs e )
{
//Always draw the icon
e.Graphics.DrawIcon(ThisIcon, 1, 1);
//Bail if rectangle is empty
if ( R == Rectangle.Empty )
return;
if ( !OK2Paint )
return;
Pen P = new Pen(Brushes.Black, 3);
e.Graphics.DrawRectangle(P, R);
// Draw image based on rectangle.
e.Graphics.DrawImage(I, R);
P.Dispose();
}
private void DrawBox ( System.Object sender , MouseEventArgs m )
{
//Prints the x,y coordinates directly on the screen
Graphics G = this.CreateGraphics();
Rectangle TextR = new Rectangle(10, this.Height-50, 100, 20 );
SolidBrush B = new SolidBrush(this.BackColor);
G.FillRectangle(B, TextR);
G.DrawString ( m.X.ToString() + ", " + m.Y.ToString(),
new Font("Arial", 10),
Brushes.Black, TextR, StringFormat.GenericDefault );
B.Dispose();
//Draw the box as the mouse drags
if ( m.Button == MouseButtons.Left )
{
if ( Box != Rectangle.Empty )
{
Pen P = new Pen(new SolidBrush(this.BackColor),1);
G.DrawRectangle ( P, Box );
P.Dispose();
}
Box = new Rectangle ( R.X, R.Y, m.X - R.X, m.Y - R.Y );
G.DrawRectangle( Pens.Black, Box );
}
}
private void StartBox( System.Object sender , MouseEventArgs m )
{
if ( m.Button == MouseButtons.Left )
{
R.X=m.X;
R.Y=m.Y;
OK2Paint = false;
}
}
private void EndBox( System.Object sender , MouseEventArgs m )
{
R.Width = m.X - R.X;
R.Height = m.Y - R.Y;
OK2Paint = true;
this.Refresh();
}
}
}
</source>
Graphics.DrawImage(Image i, int x, int y);
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Net; using System.IO; public class Form1 : System.Windows.Forms.Form {
[STAThread]
static void Main() {
Application.Run(new Form1());
}
protected override void OnPaint(System.Windows.Forms.PaintEventArgs e) {
string p = "icon.ico";
Icon ic = new Icon(p);
this.Icon = ic; // Icon 1)
Graphics g = e.Graphics;
g.DrawIcon(ic, 0, 0); // Icon 2)
Image i = ic.ToBitmap();
g.DrawImage(i, 50, 0); // Icon 3)
g.Dispose(); }
}
</source>
Graphics.DrawImage(Image img, int x, int y, int width, int height)
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class ImageReflection: Form {
Image image = Image.FromFile("Color.jpg");
public static void Main()
{
Application.Run(new ImageReflection());
}
public ImageReflection()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
int cxImage = image.Width;
int cyImage = image.Height;
grfx.DrawImage(image, cx / 2, cy / 2, cxImage, cyImage);
grfx.DrawImage(image, cx / 2, cy / 2, -cxImage, cyImage);
grfx.DrawImage(image, cx / 2, cy / 2, cxImage, -cyImage);
grfx.DrawImage(image, cx / 2, cy / 2, -cxImage, -cyImage);
}
}
</source>
Graphics.DrawImage(Image, Points[])
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class ImageAtPoints: Form {
Image image = Image.FromFile("Color.jpg");
public static void Main()
{
Application.Run(new ImageAtPoints());
}
public ImageAtPoints()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
grfx.DrawImage(image, new Point[] { new Point(cx / 2, 0),
new Point(cx, cy / 2),
new Point(0, cy / 2)});
}
}
</source>
Graphics.DrawImage(im, rec, recPart, GraphicsUnit.Pixel)
<source lang="csharp"> /* Professional Windows GUI Programming Using C# by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information ISBN: 1861007663
- /
using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace ImageZoom {
/// <summary>
/// Summary description for ImageZoom.
/// </summary>
public class ImageZoom1 : System.Windows.Forms.Form
{
private System.Windows.Forms.Label label1;
private System.Windows.Forms.GroupBox groupBox1;
private System.Windows.Forms.RadioButton radioButton1;
private System.Windows.Forms.RadioButton radioButton2;
private System.Windows.Forms.RadioButton radioButton3;
private System.Windows.Forms.RadioButton radioButton4;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.CheckBox checkBox1;
Image im = null;
Image im2 = null;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public ImageZoom1()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
this.Text = "Zooming";
this.label1.Text = "";
this.groupBox1.Text = "Zoom";
this.checkBox1.Text = "Paint";
this.radioButton1.Checked = false;
this.radioButton1.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
this.radioButton2.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
this.radioButton3.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
this.radioButton4.CheckedChanged += new System.EventHandler(this.radioButtons_CheckedChanged);
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.label1 = new System.Windows.Forms.Label();
this.groupBox1 = new System.Windows.Forms.GroupBox();
this.checkBox1 = new System.Windows.Forms.CheckBox();
this.radioButton1 = new System.Windows.Forms.RadioButton();
this.radioButton2 = new System.Windows.Forms.RadioButton();
this.radioButton3 = new System.Windows.Forms.RadioButton();
this.radioButton4 = new System.Windows.Forms.RadioButton();
this.label2 = new System.Windows.Forms.Label();
this.groupBox1.SuspendLayout();
this.SuspendLayout();
//
// label1
//
this.label1.Location = new System.Drawing.Point(8, 16);
this.label1.Name = "label1";
this.label1.Size = new System.Drawing.Size(200, 240);
this.label1.TabIndex = 0;
this.label1.Text = "label1";
//
// groupBox1
//
this.groupBox1.Controls.AddRange(new System.Windows.Forms.Control[] {
this.checkBox1,
this.radioButton1,
this.radioButton2,
this.radioButton3,
this.radioButton4});
this.groupBox1.Location = new System.Drawing.Point(232, 48);
this.groupBox1.Name = "groupBox1";
this.groupBox1.Size = new System.Drawing.Size(72, 128);
this.groupBox1.TabIndex = 1;
this.groupBox1.TabStop = false;
this.groupBox1.Text = "groupBox1";
//
// checkBox1
//
this.checkBox1.Location = new System.Drawing.Point(8, 32);
this.checkBox1.Name = "checkBox1";
this.checkBox1.Size = new System.Drawing.Size(56, 24);
this.checkBox1.TabIndex = 1;
this.checkBox1.Text = "checkBox1";
this.checkBox1.CheckedChanged += new System.EventHandler(this.checkBox1_CheckedChanged);
//
// radioButton1
//
this.radioButton1.Location = new System.Drawing.Point(8, 64);
this.radioButton1.Name = "radioButton1";
this.radioButton1.Size = new System.Drawing.Size(16, 24);
this.radioButton1.TabIndex = 0;
this.radioButton1.Text = "radioButton1";
//
// radioButton2
//
this.radioButton2.Location = new System.Drawing.Point(40, 64);
this.radioButton2.Name = "radioButton2";
this.radioButton2.Size = new System.Drawing.Size(16, 24);
this.radioButton2.TabIndex = 0;
this.radioButton2.Text = "radioButton1";
//
// radioButton3
//
this.radioButton3.Location = new System.Drawing.Point(8, 96);
this.radioButton3.Name = "radioButton3";
this.radioButton3.Size = new System.Drawing.Size(16, 24);
this.radioButton3.TabIndex = 0;
this.radioButton3.Text = "radioButton1";
//
// radioButton4
//
this.radioButton4.Location = new System.Drawing.Point(40, 96);
this.radioButton4.Name = "radioButton4";
this.radioButton4.Size = new System.Drawing.Size(16, 24);
this.radioButton4.TabIndex = 0;
this.radioButton4.Text = "radioButton1";
//
// label2
//
this.label2.Location = new System.Drawing.Point(328, 16);
this.label2.Name = "label2";
this.label2.Size = new System.Drawing.Size(200, 240);
this.label2.TabIndex = 0;
this.label2.Text = "label1";
//
// ImageZoom
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(536, 266);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.groupBox1,
this.label1,
this.label2});
this.Name = "ImageZoom";
this.Text = "ImageZoom";
this.groupBox1.ResumeLayout(false);
this.ResumeLayout(false);
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new ImageZoom1());
}
protected override void OnPaint(PaintEventArgs e)
{ ImageZoom(); }
private void checkBox1_CheckedChanged(object sender, System.EventArgs e)
{ ImageZoom(); }
private void radioButtons_CheckedChanged(object sender, System.EventArgs e)
{ ImageZoom(); }
protected void ImageZoom()
{
Graphics g1 = Graphics.FromHwnd(this.label1.Handle);
Graphics g2 = Graphics.FromHwnd(this.label2.Handle);
Rectangle rec;
Rectangle recPart;
if (this.checkBox1.Checked)
{
if (im == null) ReadImage();
rec = new Rectangle(0, 0, label1.Width, label1.Height);
g1.DrawImage(im, rec);
// Center part:
recPart = new Rectangle(im.Width/4, im.Height/4, im.Width/2,
im.Height/2);
if(this.radioButton1.Checked) // Left-Top part
recPart = new Rectangle(0, 0, im.Width/2, im.Height/2);
if(this.radioButton2.Checked) // Right-Top part
recPart = new Rectangle(im.Width/2, 0, im.Width/2, im.Height/2);
if(this.radioButton3.Checked) // Left-Down part
recPart = new Rectangle(0, im.Height/2, im.Width/2, im.Height/2);
if(this.radioButton4.Checked) // Right-Down part
recPart = new Rectangle(im.Width/2, im.Height/2, im.Width/2,
im.Height/2);
g2.DrawImage(im, rec, recPart, GraphicsUnit.Pixel);
}
else
{
Clear(g1);
Clear(g2);
}
g1.Dispose(); g2.Dispose();
}
protected void ReadImage()
{
string path = @"szeret3.BMP";
im = Image.FromFile(path);
this.radioButton1.Enabled = true;
this.radioButton2.Enabled = true;
this.radioButton3.Enabled = true;
this.radioButton4.Enabled = true;
}
protected void Clear(Graphics g)
{
g.Clear(this.BackColor);
g.Dispose();
im = null;
im2 = null;
this.radioButton1.Checked = false;
this.radioButton2.Checked = false;
this.radioButton3.Checked = false;
this.radioButton4.Checked = false;
this.radioButton1.Enabled = false;
this.radioButton2.Enabled = false;
this.radioButton3.Enabled = false;
this.radioButton4.Enabled = false;
}
}
}
</source>
Graphics.DrawLine(Pen p, int x0,int y0, int x1, int y1)
<source lang="csharp">
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class Form1 : System.Windows.Forms.Form
{
public Form1()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Text = "";
this.Resize += new System.EventHandler(this.Form1_Resize);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
}
static void Main()
{
Application.Run(new Form1());
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Pen p = new Pen(Color.Black);
g.DrawLine(p, 0, 0, 100, 100);
p.Dispose();
}
private void Form1_Resize(object sender, System.EventArgs e)
{
Invalidate();
}
}
</source>
Graphics.DrawLine(Pen,Point point1, Point point2)
<source lang="csharp"> using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; public class frmScribble : System.Windows.Forms.Form {
private System.ruponentModel.Container components = null;
private bool mouseDown = false;
private Point lastPoint = Point.Empty;
private string color = "black";
private Graphics g;
private Pen p;
public frmScribble() {
g = CreateGraphics();
p = new Pen(Color.FromName(color));
}
protected override void OnMouseDown(MouseEventArgs e) {
mouseDown = true;
if (e.Button == MouseButtons.Right) {
ContextMenu m = new ContextMenu();
m.MenuItems.Add(0, new MenuItem("black", new EventHandler(RightMouseButton_Click)));
m.MenuItems.Add(1, new MenuItem("white", new EventHandler(RightMouseButton_Click)));
m.MenuItems.Add(2, new MenuItem("red", new EventHandler(RightMouseButton_Click)));
m.MenuItems.Add(3, new MenuItem("green", new EventHandler(RightMouseButton_Click)));
m.MenuItems.Add(4, new MenuItem("blue", new EventHandler(RightMouseButton_Click)));
m.Show(this, new Point(e.X, e.Y));
}
}
protected void RightMouseButton_Click(object sender, EventArgs e) {
color = ((MenuItem)sender).Text;
p = new Pen(Color.FromName(color));
}
protected override void OnMouseUp(MouseEventArgs e) {
mouseDown = false;
}
protected override void OnMouseMove(MouseEventArgs e) {
if (lastPoint.Equals(Point.Empty)) lastPoint = new Point(e.X, e.Y);
if (mouseDown) {
Point pMousePos = new Point(e.X, e.Y);
g.DrawLine(p, pMousePos, lastPoint);
}
lastPoint = new Point(e.X, e.Y);
}
[STAThread]
static void Main() {
Application.Run(new frmScribble());
}
}
</source>
Graphics.DrawLines(Pen pen, Point[] points)
<source lang="csharp">
using System; using System.Drawing; using System.Windows.Forms;
class WidePolyline: Form {
public static void Main()
{
Application.Run(new WidePolyline());
}
public WidePolyline()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Pen pen = new Pen(clr, 25);
grfx.DrawLines(pen, new Point[] {
new Point( 25, 100), new Point(125, 100),
new Point(125, 50), new Point(225, 50),
new Point(225, 100), new Point(325, 100) });
}
}
</source>
Graphics.DrawPie
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class PieChart: Form {
int[] aiValues = { 50, 100, 25, 150, 100, 75 };
public static void Main()
{
Application.Run(new PieChart());
}
public PieChart()
{
Text = "Pie Chart";
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Rectangle rect = new Rectangle(50, 50, 200, 200);
Pen pen = new Pen(clr);
int iTotal = 0;
float fAngle = 0, fSweep;
foreach(int iValue in aiValues)
iTotal += iValue;
foreach(int iValue in aiValues)
{
fSweep = 360f * iValue / iTotal;
DrawPieSlice(grfx, pen, rect, fAngle, fSweep);
fAngle += fSweep;
}
}
protected virtual void DrawPieSlice(Graphics grfx, Pen pen,
Rectangle rect,
float fAngle, float fSweep)
{
grfx.DrawPie(pen, rect, fAngle, fSweep);
}
}
</source>
Graphics.DrawRectangle
<source lang="csharp">
using System; using System.Drawing; using System.Windows.Forms;
class OutlineClientRectangle: Form {
public static void Main()
{
Application.Run(new OutlineClientRectangle());
}
public OutlineClientRectangle()
{
Text = "Client Rectangle";
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
grfx.DrawRectangle(Pens.Red, 0, 0, cx - 1, cy - 1);
}
}
</source>
Graphics.DrawRectangles
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class FourByFours: Form {
public static void Main()
{
Application.Run(new FourByFours());
}
public FourByFours()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Pen pen = new Pen(clr);
Brush brush = new SolidBrush(clr);
grfx.DrawRectangles(pen, new Rectangle[] {new Rectangle(8, 2, 4, 4)});
}
}
</source>
Graphics.DrawString
<source lang="csharp">
using System; using System.Drawing; using System.Windows.Forms;
class TwoPaintHandlers {
public static void Main()
{
Form form = new Form();
form.Text = "Two Paint Handlers";
form.BackColor = Color.White;
form.Paint += new PaintEventHandler(PaintHandler1);
form.Paint += new PaintEventHandler(PaintHandler2);
Application.Run(form);
}
static void PaintHandler1(object objSender, PaintEventArgs pea)
{
Form form = (Form)objSender;
Graphics graphics = pea.Graphics;
graphics.DrawString("First Paint Event Handler", form.Font,
Brushes.Black, 0, 0);
}
static void PaintHandler2(object objSender, PaintEventArgs pea)
{
Form form = (Form)objSender;
Graphics graphics = pea.Graphics;
graphics.DrawString("Second Paint Event Handler", form.Font,
Brushes.Black, 0, 100);
}
}
</source>
Graphics.EnumerateMetafileProc
<source lang="csharp"> /* GDI+ Programming in C# and VB .NET by Nick Symmonds Publisher: Apress ISBN: 159059035X
- /
using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Drawing.Imaging; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Runtime.InteropServices; namespace MetaEnum_c {
public class MetaEnum : System.Windows.Forms.Form
{
private System.ruponentModel.Container components = null;
private System.Windows.Forms.ListBox LB;
Metafile mf = new Metafile("mymeta.emf");
public MetaEnum()
{
InitializeComponent();
}
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
mf.Dispose();
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.LB = new System.Windows.Forms.ListBox();
this.SuspendLayout();
//
// LB
//
this.LB.Location = new System.Drawing.Point(208, 232);
this.LB.Name = "LB";
this.LB.Size = new System.Drawing.Size(168, 121);
this.LB.TabIndex = 1;
//
// MetaEnum
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(392, 373);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.LB});
this.MaximizeBox = false;
this.MinimizeBox = false;
this.Name = "MetaEnum";
this.StartPosition = System.Windows.Forms.FormStartPosition.CenterScreen;
this.Text = "MetaEnum";
this.Load += new System.EventHandler(this.MetaEnum_Load);
this.ResumeLayout(false);
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new MetaEnum());
}
private void MetaEnum_Load(object sender, System.EventArgs e)
{
}
protected override void OnPaint(PaintEventArgs e)
{
Graphics G = e.Graphics;
G.EnumerateMetafile( mf, new Point( 50, 50 ),
new Graphics.EnumerateMetafileProc(this.MetafileCallback) );
}
// Define callback method.
private bool MetafileCallback( EmfPlusRecordType recordType, int flags,
int dataSize, IntPtr data,
PlayRecordCallback callbackData)
{
LB.Items.Add(recordType);
if ( dataSize > 0 )
{
byte[] D = new byte[dataSize];
Marshal.Copy(data, D, 0, dataSize);
mf.PlayRecord(recordType, flags, dataSize, D);
}
return true;
}
}
}
</source>
Graphics.FillClosedCurve
<source lang="csharp">
using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class ClosedCurveFillModes: Form {
public static void Main()
{
Application.Run(new ClosedCurveFillModes());
}
ClosedCurveFillModes()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Brush brush = new SolidBrush(clr);
Point[] apt = new Point[5];
for (int i = 0; i < apt.Length; i++)
{
double dAngle = (i * 0.8 - 0.5) * Math.PI;
apt[i] = new Point(
(int)(cx *(0.25 + 0.24 * Math.Cos(dAngle))),
(int)(cy *(0.50 + 0.48 * Math.Sin(dAngle))));
}
grfx.FillClosedCurve(brush, apt, FillMode.Alternate);
for (int i = 0; i < apt.Length; i++)
apt[i].X += cx / 2;
grfx.FillClosedCurve(brush, apt, FillMode.Winding);
}
}
</source>
Graphics.FillEllipse
<source lang="csharp">
using System; using System.Drawing; using System.Windows.Forms;
class FourByFours: Form {
public static void Main()
{
Application.Run(new FourByFours());
}
public FourByFours()
{
Text = "Four by Fours";
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Pen pen = new Pen(clr);
Brush brush = new SolidBrush(clr);
grfx.FillEllipse(brush, new Rectangle(14, 8, 4, 4));
}
}
</source>
Graphics.FillEllipse(Brush brush,int x, int y,int width,int height)
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
public class Test : Form {
private RadioButton square = new RadioButton();
private RadioButton circle = new RadioButton();
private ComboBox color = new ComboBox();
private Color c = Color.Red;
public Test( ) {
Text = "Select Item";
square.Text = "Square";
circle.Text = "Circle";
color.Text = "Choose a color";
Size = new Size(400,250);
int w = 20;
square.Location = new Point(w, 30);
circle.Location = new Point(w += 10 + square.Width, 30);
color.Location = new Point(w += 10 + circle.Width, 30);
color.Items.Add("Red");
color.Items.Add("Green");
color.Items.Add("Blue");
Controls.Add(square);
Controls.Add(circle);
Controls.Add(color);
square.CheckedChanged += new EventHandler(Checked_Changed);
circle.CheckedChanged += new EventHandler(Checked_Changed);
color.SelectedIndexChanged += new EventHandler(Selected_Index);
}
protected override void OnPaint(PaintEventArgs e){
Graphics g = e.Graphics;
Brush brush = new SolidBrush(c);
if (square.Checked)
g.FillRectangle(brush,100,100,100,100);
else
g.FillEllipse(brush,100,100,100,100);
base.OnPaint( e );
}
protected void Selected_Index(Object sender, EventArgs e){
if (color.SelectedItem.ToString() == "Red" )
c = Color.Red;
else if (color.SelectedItem.ToString() == "Green")
c = Color.Green;
else
c = Color.Blue;
Invalidate();
}
protected void Checked_Changed(Object sender, EventArgs e) {
Invalidate();
}
static void Main() {
Application.Run(new Test());
}
}
</source>
Graphics.FillPath(Brushes.AliceBlue, myPath);
<source lang="csharp">
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
public class Form1 : System.Windows.Forms.Form
{
GraphicsPath myPath = new GraphicsPath();
private bool isImageClicked = false;
public Form1()
{
InitializeComponent();
myPath.StartFigure();
myPath.AddLine(new Point(150, 10), new Point(120, 150));
myPath.AddArc(200, 200, 100, 100, 0, 90);
Point[] points = {new Point(350, 325), new Point(250, 350), new Point(250, 250), new Point(350, 275)};
myPath.AddCurve(points);
myPath.CloseFigure();
CenterToScreen();
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Text = "Form1";
this.MouseUp += new System.Windows.Forms.MouseEventHandler(this.Form1_MouseUp);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
}
static void Main()
{
Application.Run(new Form1());
}
private void Form1_MouseUp(object sender, System.Windows.Forms.MouseEventArgs e)
{
Point mousePt = new Point(e.X, e.Y);
if(myPath.IsVisible(mousePt))
{
isImageClicked = true;
this.Text = "You clicked the strange shape...";
} else {
isImageClicked = false;
this.Text = "Images";
}
Invalidate();
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
g.FillPath(Brushes.AliceBlue, myPath);
if(isImageClicked == true)
{
Pen outline = new Pen(Color.Black, 2);
g.DrawPath(outline, myPath);
}
}
}
</source>
Graphics.FillPolygon
<source lang="csharp">
using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class OwnerDrawButtons: Form {
readonly int cxImage, cyImage;
readonly int cxBtn, cyBtn, dxBtn;
readonly Button btnLarger, btnSmaller;
public static void Main()
{
Application.Run(new OwnerDrawButtons());
}
public OwnerDrawButtons()
{
ResizeRedraw = true;
cxImage = 4 * Font.Height;
cyImage = 4 * Font.Height;
cxBtn = cxImage + 8;
cyBtn = cyImage + 8;
dxBtn = Font.Height;
btnLarger = new Button();
btnLarger.Parent = this;
btnLarger.Size = new Size(cxBtn, cyBtn);
btnLarger.Click += new EventHandler(ButtonLargerOnClick);
btnLarger.Paint += new PaintEventHandler(ButtonOnPaint);
btnSmaller = new Button();
btnSmaller.Parent = this;
btnSmaller.Size = new Size(cxBtn, cyBtn);
btnSmaller.Click += new EventHandler(ButtonSmallerOnClick);
btnSmaller.Paint += new PaintEventHandler(ButtonOnPaint);
OnResize(EventArgs.Empty);
}
protected override void OnResize(EventArgs ea)
{
base.OnResize(ea);
btnLarger.Location =
new Point(ClientSize.Width / 2 - cxBtn - dxBtn / 2,
(ClientSize.Height - cyBtn) / 2);
btnSmaller.Location =
new Point(ClientSize.Width / 2 + dxBtn / 2,
(ClientSize.Height - cyBtn) / 2);
}
void ButtonLargerOnClick(object obj, EventArgs ea)
{
Console.WriteLine("clicked large");
}
void ButtonSmallerOnClick(object obj, EventArgs ea)
{
Console.WriteLine("clicked small");
}
void ButtonOnPaint(object obj, PaintEventArgs pea)
{
Button btn = (Button) obj;
Graphics grfx = pea.Graphics;
ControlPaint.DrawButton(grfx, 0, 0, cxBtn, cyBtn,
(btn == (Button) GetChildAtPoint(
PointToClient(
MousePosition))) &&
btn.Capture ? ButtonState.Pushed : ButtonState.Normal);
GraphicsState grfxstate = grfx.Save();
grfx.TranslateTransform((cxBtn - cxImage) / 2, (cyBtn - cyImage) / 2);
DrawLargerButton(grfx, cxImage, cyImage);
grfx.Restore(grfxstate);
if (btn.Focused)
ControlPaint.DrawFocusRectangle(grfx,
new Rectangle((cxBtn - cxImage) / 2 + cxImage / 16,
(cyBtn - cyImage) / 2 + cyImage / 16,
7 * cxImage / 8, 7 * cyImage / 8));
}
void DrawLargerButton(Graphics grfx, int cx, int cy)
{
Brush brush = new SolidBrush(btnLarger.ForeColor);
Pen pen = new Pen(btnLarger.ForeColor);
grfx.TranslateTransform(cx / 2, cy / 2);
for (int i = 0; i < 4; i++)
{
grfx.DrawLine(pen, 0, 0, cx / 4, 0);
grfx.FillPolygon(brush, new Point[] {
new Point(cx / 4, -cy / 8),
new Point(cx / 2, 0),
new Point(cx / 4, cy / 8)});
grfx.RotateTransform(90);
}
}
}
</source>
Graphics.FillRectangle
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Font f = new Font("Times New Roman", 12);
Font bf = new Font(f, FontStyle.Bold);
StringFormat sf = new StringFormat();
float[] ts = { 10.0f, 70.0f, 100.0f, 90.0f };
sf.SetTabStops(0.0f, ts);
string s1 = "\tA\tAA\tAAA\tAAAA";
string s2 = "\tAAAA\tAAA\tAA\tA";
string s3 = "\tAAAAAAAA\tAAAAAAA\tAAAAAA\tAAAAA\n\tAAAA\tAAA\tAA\tAA";
g.DrawString(s1, bf, Brushes.Black, 20, 20, sf);
g.DrawString(s2, f, Brushes.Blue, 20, 20 + bf.Height, sf);
g.DrawString(s3, f, Brushes.Blue, 20,
20 + bf.Height + f.Height, sf);
f.Dispose();
bf.Dispose();
}
public static void Main() {
Application.Run(new Form1());
}
}
</source>
Graphics.FillRectangles
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class FourByFours: Form {
public static void Main()
{
Application.Run(new FourByFours());
}
public FourByFours()
{
Text = "Four by Fours";
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Pen pen = new Pen(clr);
Brush brush = new SolidBrush(clr);
grfx.FillRectangles(brush, new Rectangle[]
{new Rectangle(8, 8, 4, 4)});
}
}
</source>
Graphics.FillRegion
<source lang="csharp">
using System;
using System.Drawing;
using System.Drawing.Drawing2D;
using System.Collections;
using System.ruponentModel;
using System.Windows.Forms;
using System.Data;
using System.Drawing.Imaging;
public class Form1 : System.Windows.Forms.Form
{
public Form1()
{
InitializeComponent();
}
private void InitializeComponent()
{
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 273);
this.Text = "";
this.Resize += new System.EventHandler(this.Form1_Resize);
this.Paint += new System.Windows.Forms.PaintEventHandler(this.Form1_Paint);
}
static void Main()
{
Application.Run(new Form1());
}
private void Form1_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
GraphicsPath gp = new GraphicsPath();
gp.AddLine(10, 10, 10, 50);
gp.AddBezier(10, 50, 120, 55, 25, 70, 30, 70);
gp.AddLine(30, 70, 60, 70);
gp.AddBezier(60, 70, 305, 70, 90, 55, 90, 50);
gp.AddLine(90, 50, 90, 30);
gp.StartFigure();
gp.AddLine(60, 110, 40, 160);
gp.AddLine(40, 160, 60, 180);
// Create a Region whose boundary is the above GraphicsPath
Region reg = new Region(gp);
g.FillRegion(Brushes.Green, reg);
reg.Dispose();
gp.Dispose();
}
private void Form1_Resize(object sender, System.EventArgs e)
{
Invalidate();
}
}
</source>
Graphics.FromHwnd()
<source lang="csharp"> /* Professional Windows GUI Programming Using C# by Jay Glynn, Csaba Torok, Richard Conway, Wahid Choudhury,
Zach Greenvoss, Shripad Kulkarni, Neil Whitlow
Publisher: Peer Information ISBN: 1861007663
- /
using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; namespace Cube {
/// <summary>
/// Summary description for CubeImage.
/// </summary>
public class CubeImage : System.Windows.Forms.Form
{
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public CubeImage()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
this.Text = "Picture Cube";
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if (components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
//
// CubeImage
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(292, 189);
this.Name = "CubeImage";
this.Text = "CubeImage";
}
#endregion
/// <summary>
/// The main entry point for the application.
/// </summary>
[STAThread]
static void Main()
{
Application.Run(new CubeImage());
}
protected override void OnPaint(PaintEventArgs pea)
{
CubeDBuf();
}
private void CubeDBuf()
{
Graphics g;
string path;
int x = 100, y = 40;
Point A = new Point( 10, 50);
Point B = new Point(180, 50);
Point C = new Point( 10, 170);
Point a = new Point(A.X + x, A.Y - y);
Point b = new Point(B.X + x, B.Y - y);
Point Z = new Point(B.X, C.Y);
Point[] p3Fro = {A, B, C};
Point[] p3Top = {a, b, A};
Point[] p3Rig = {B, b, Z};
Bitmap bm = new Bitmap(B.X +x, C.Y + y);
g = Graphics.FromImage(bm);
path = @"IndonHouses.bmp";
Image im1 = Image.FromFile(path);
g.DrawImage(im1, p3Fro);
path = @"Pyramids.BMP";
Image im3 = Image.FromFile(path);
g.DrawImage(im3, p3Top);
path = @"TadjMahal.bmp";
Image im2 = Image.FromFile(path);
g.DrawImage(im2, p3Rig);
g = Graphics.FromHwnd(this.Handle);
g.DrawImage(bm, 1, 1);
g.Dispose();
}
}
}
</source>
Graphics.FromImage
<source lang="csharp">
using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Data; using System.Drawing.Drawing2D; public class Form1 : System.Windows.Forms.Form {
private void Form1_Paint(object sender,
System.Windows.Forms.PaintEventArgs p) {
Graphics g = p.Graphics;
}
private void createManually() {
Graphics g;
g = this.CreateGraphics();
}
private void createFromFile() {
Graphics g;
Bitmap b;
b = new Bitmap("C:\\E.bmp");
g = Graphics.FromImage(b);
}
private void drawLine() {
Graphics g;
g = this.CreateGraphics();
Icon i = new Icon(@"C:\Desktop.ico");
g.DrawIcon(i, 150, 15);
}
}
</source>
Graphics.InterpolationMode
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Drawing.Drawing2D; using System.Text; using System.Windows.Forms; public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
Bitmap bmp = new Bitmap("rama.jpg");
g.FillRectangle(Brushes.White, this.ClientRectangle);
int width = bmp.Width;
int height = bmp.Height;
g.InterpolationMode = InterpolationMode.NearestNeighbor;
g.DrawImage(
bmp,
new Rectangle(10, 10, 120, 120), // source rectangle
new Rectangle(0, 0, width, height), // destination rectangle
GraphicsUnit.Pixel);
}
public static void Main() {
Application.Run(new Form1());
}
}
</source>
Graphics.MeasureString
<source lang="csharp">
using System; using System.Drawing; using System.Windows.Forms;
class SysInfoColumns: Form {
public static void Main()
{
Application.Run(new SysInfoColumns());
}
public SysInfoColumns()
{
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
Brush brush = new SolidBrush(ForeColor);
SizeF sizef;
float cxCol, y = 0;
int cySpace;
sizef = grfx.MeasureString("ArrangeStartingPosition ", Font);
cxCol = sizef.Width;
cySpace = Font.Height;
grfx.DrawString("ArrangeDirection", Font, brush, 0, y);
grfx.DrawString(SystemInformation.ArrangeDirection.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("ArrangeStartingPosition", Font, brush, 0, y);
grfx.DrawString(
SystemInformation.ArrangeStartingPosition.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("BootMode", Font, brush, 0, y);
grfx.DrawString(SystemInformation.BootMode.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("Border3DSize", Font, brush, 0, y);
grfx.DrawString(SystemInformation.Border3DSize.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("BorderSize", Font, brush, 0, y);
grfx.DrawString(SystemInformation.BorderSize.ToString(),
Font, brush, cxCol, y);
y += cySpace;
grfx.DrawString("CaptionButtonSize", Font, brush, 0, y);
grfx.DrawString(SystemInformation.CaptionButtonSize.ToString(),
Font, brush, cxCol, y);
}
}
</source>
Graphics.PageScale
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class ArbitraryCoordinates: Form {
public static void Main()
{
Application.Run(new ArbitraryCoordinates());
}
public ArbitraryCoordinates()
{
Text = "Arbitrary Coordinates";
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
grfx.PageUnit = GraphicsUnit.Pixel;
SizeF sizef = grfx.VisibleClipBounds.Size;
grfx.PageScale = Math.Min(sizef.Width / grfx.DpiX / 1000,
sizef.Height / grfx.DpiY / 1000);
grfx.DrawEllipse(new Pen(clr), 0, 0, 990, 990);
}
}
</source>
Graphics.PageUnit
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class ArbitraryCoordinates: Form {
public static void Main()
{
Application.Run(new ArbitraryCoordinates());
}
public ArbitraryCoordinates()
{
Text = "Arbitrary Coordinates";
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
grfx.PageUnit = GraphicsUnit.Pixel;
SizeF sizef = grfx.VisibleClipBounds.Size;
grfx.DrawEllipse(new Pen(clr), 0, 0, 990, 990);
}
}
</source>
Graphics.PixelOffsetMode
<source lang="csharp"> using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class AntiAlias: Form {
public static void Main()
{
Application.Run(new AntiAlias());
}
public AntiAlias()
{
Text = "Anti-Alias Demo";
BackColor = SystemColors.Window;
ForeColor = SystemColors.WindowText;
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
Pen pen = new Pen(ForeColor);
grfx.PixelOffsetMode = PixelOffsetMode.Default;
grfx.DrawLine(pen, 2, 2, 18, 10);
}
}
</source>
Graphics.ReleaseHdc
<source lang="csharp"> using System; using System.Drawing; using System.Drawing.Imaging; using System.IO; using System.Windows.Forms;
class CreateMetafileMemory: Form {
MemoryStream ms = new MemoryStream();
public static void Main()
{
Application.Run(new CreateMetafileMemory());
}
public CreateMetafileMemory()
{
ResizeRedraw = true;
Graphics grfx = CreateGraphics();
IntPtr ipHdc = grfx.GetHdc();
Metafile mf = new Metafile(ms, ipHdc);
grfx.ReleaseHdc(ipHdc);
grfx.Dispose();
grfx = Graphics.FromImage(mf);
grfx.FillEllipse(Brushes.Gray, 0, 0, 100, 100);
grfx.DrawEllipse(Pens.Black, 0, 0, 100, 100);
grfx.DrawArc(new Pen(Color.Red, 10), 20, 20, 60, 60, 30, 120);
grfx.Dispose();
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
ms.Position = 0;
Metafile mf = new Metafile(ms);
for (int y = 0; y < cy; y += mf.Height)
for (int x = 0; x < cx; x += mf.Width)
grfx.DrawImage(mf, x, y, mf.Width, mf.Height);
}
}
</source>
Graphics.RotateTransform
<source lang="csharp"> using System; using System.Collections.Generic; using System.ruponentModel; using System.Data; using System.Drawing; using System.Text; using System.Windows.Forms; public class Form1 : Form {
protected override void OnPaint(PaintEventArgs e) {
Graphics g = e.Graphics;
g.FillRectangle(Brushes.White, this.ClientRectangle);
Font f = new Font("Times New Roman", 24);
g.DrawString("Rotate then Translate", f, Brushes.Black, 0, 0);
g.RotateTransform(45);
g.TranslateTransform(150, 0);
g.DrawString("Rotate then Translate ", f, Brushes.Black, 0, 0);
}
public static void Main() {
Application.Run(new Form1());
}
}
</source>
Graphics.ScaleTransform
<source lang="csharp"> using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class MobyDick: Form {
public static void Main()
{
Application.Run(new MobyDick());
}
public MobyDick()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
grfx.ScaleTransform(1, 3);
grfx.DrawString("abc", Font, new SolidBrush(clr),
new Rectangle(0, 0, cx, cy));
}
}
</source>
Graphics.SetClip
<source lang="csharp">
using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class KeyholeClip: Form {
protected Image image;
protected GraphicsPath path;
public static void Main()
{
Application.Run(new KeyholeClip());
}
public KeyholeClip()
{
ResizeRedraw = true;
image = Image.FromFile("Color.jpg");
path = new GraphicsPath();
path.AddArc(80, 0, 80, 80, 45, -270);
path.AddLine(70, 180, 170, 180);
}
protected override void OnPaint(PaintEventArgs pea)
{
pea.Graphics.SetClip(path);
pea.Graphics.DrawImage(image, 0, 0, image.Width, image.Height);
}
}
</source>
Graphics.SetClip(path, (CombineMode)miCombineMode.Index)
<source lang="csharp">
using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class ClippingCombinations: Form {
string strCaption = "CombineMode = ";
MenuItem miCombineMode;
public static void Main()
{
Application.Run(new ClippingCombinations());
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
public ClippingCombinations()
{
ResizeRedraw = true;
Menu = new MainMenu();
Menu.MenuItems.Add("&CombineMode");
EventHandler ehClick = new EventHandler(MenuCombineModeOnClick);
for (int i = 0; i < 6; i++)
{
MenuItem mi = new MenuItem("&" + (CombineMode)i);
mi.Click += ehClick;
mi.RadioCheck = true;
Menu.MenuItems[0].MenuItems.Add(mi);
}
miCombineMode = Menu.MenuItems[0].MenuItems[0];
miCombineMode.Checked = true;
}
void MenuCombineModeOnClick(object obj, EventArgs ea)
{
miCombineMode.Checked = false;
miCombineMode = (MenuItem) obj;
miCombineMode.Checked = true;
Text = strCaption + (CombineMode)miCombineMode.Index;
Invalidate();
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
GraphicsPath path = new GraphicsPath();
path.AddEllipse(0, 0, 2 * cx / 3, cy);
grfx.SetClip(path);
path.Reset();
path.AddEllipse(cx / 3, 0, 2 * cx / 3, cy);
grfx.SetClip(path, (CombineMode)miCombineMode.Index);
grfx.FillRectangle(Brushes.Red, 0, 0, cx, cy);
}
}
</source>
Graphics.SmoothingMode
<source lang="csharp"> using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class AntiAlias: Form {
public static void Main()
{
Application.Run(new AntiAlias());
}
public AntiAlias()
{
Text = "Anti-Alias Demo";
BackColor = SystemColors.Window;
ForeColor = SystemColors.WindowText;
}
protected override void OnPaint(PaintEventArgs pea)
{
Graphics grfx = pea.Graphics;
Pen pen = new Pen(ForeColor);
grfx.SmoothingMode = SmoothingMode.None;
grfx.DrawLine(pen, 2, 2, 18, 10);
}
}
</source>
Graphics.TextRenderingHint
<source lang="csharp"> /* User Interfaces in C#: Windows Forms and Custom Controls by Matthew MacDonald Publisher: Apress ISBN: 1590590457
- /
using System; using System.Drawing; using System.Collections; using System.ruponentModel; using System.Windows.Forms; using System.Drawing.Text; namespace GDI_Basics {
/// <summary>
/// Summary description for SmoothingFonts.
/// </summary>
public class SmoothingFonts : System.Windows.Forms.Form
{
internal System.Windows.Forms.Label Label3;
internal System.Windows.Forms.Label Label2;
internal System.Windows.Forms.Label Label1;
/// <summary>
/// Required designer variable.
/// </summary>
private System.ruponentModel.Container components = null;
public SmoothingFonts()
{
//
// Required for Windows Form Designer support
//
InitializeComponent();
//
// TODO: Add any constructor code after InitializeComponent call
//
}
/// <summary>
/// Clean up any resources being used.
/// </summary>
protected override void Dispose( bool disposing )
{
if( disposing )
{
if(components != null)
{
components.Dispose();
}
}
base.Dispose( disposing );
}
#region Windows Form Designer generated code
/// <summary>
/// Required method for Designer support - do not modify
/// the contents of this method with the code editor.
/// </summary>
private void InitializeComponent()
{
this.Label3 = new System.Windows.Forms.Label();
this.Label2 = new System.Windows.Forms.Label();
this.Label1 = new System.Windows.Forms.Label();
this.SuspendLayout();
//
// Label3
//
this.Label3.BackColor = System.Drawing.Color.White;
this.Label3.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.Label3.Location = new System.Drawing.Point(272, 168);
this.Label3.Name = "Label3";
this.Label3.Size = new System.Drawing.Size(128, 16);
this.Label3.TabIndex = 5;
this.Label3.Text = " ClearTypeGridFit";
//
// Label2
//
this.Label2.BackColor = System.Drawing.Color.White;
this.Label2.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.Label2.Location = new System.Drawing.Point(272, 100);
this.Label2.Name = "Label2";
this.Label2.Size = new System.Drawing.Size(128, 16);
this.Label2.TabIndex = 4;
this.Label2.Text = " AntiAliasGridFit";
//
// Label1
//
this.Label1.BackColor = System.Drawing.Color.White;
this.Label1.BorderStyle = System.Windows.Forms.BorderStyle.FixedSingle;
this.Label1.Location = new System.Drawing.Point(272, 36);
this.Label1.Name = "Label1";
this.Label1.Size = new System.Drawing.Size(128, 16);
this.Label1.TabIndex = 3;
this.Label1.Text = " SingleBitPerPixelGridFit";
//
// SmoothingFonts
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 14);
this.ClientSize = new System.Drawing.Size(440, 314);
this.Controls.AddRange(new System.Windows.Forms.Control[] {
this.Label3,
this.Label2,
this.Label1});
this.Font = new System.Drawing.Font("Tahoma", 8.25F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((System.Byte)(0)));
this.Name = "SmoothingFonts";
this.Text = "SmoothingFonts";
this.Paint += new System.Windows.Forms.PaintEventHandler(this.SmoothingFonts_Paint);
this.ResumeLayout(false);
}
#endregion
[STAThread]
static void Main()
{
Application.Run(new SmoothingFonts());
}
private void SmoothingFonts_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
Font TextFont = new Font("Times New Roman", 25, FontStyle.Italic);
e.Graphics.TextRenderingHint = TextRenderingHint.SingleBitPerPixelGridFit;
e.Graphics.DrawString("Sample Text", TextFont, Brushes.Black, 20, 20);
e.Graphics.TextRenderingHint = TextRenderingHint.AntiAliasGridFit;
e.Graphics.DrawString("Sample Text", TextFont, Brushes.Black, 20, 85);
e.Graphics.TextRenderingHint = TextRenderingHint.ClearTypeGridFit;
e.Graphics.DrawString("Sample Text", TextFont, Brushes.Black, 20, 150);
}
}
}
</source>
Graphics.Transform
<source lang="csharp"> using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class MobyDick: Form {
public static void Main()
{
Application.Run(new MobyDick());
}
public MobyDick()
{
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
grfx.Transform = new Matrix(1, 1, -1, 1, 0, 0);
grfx.DrawString("abc", Font, new SolidBrush(clr),
new Rectangle(0, 0, cx, cy));
}
}
</source>
Graphics.TranslateClip
<source lang="csharp"> using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms; class KeyholeClipCentered : Form {
GraphicsPath path = new GraphicsPath();
Image image = Image.FromFile("Color.jpg");
public static void Main() {
Application.Run(new KeyholeClipCentered());
}
public KeyholeClipCentered() {
ResizeRedraw = true;
path.AddArc(80, 0, 80, 80, 45, -270);
path.AddLine(70, 180, 170, 180);
}
protected override void OnPaint(PaintEventArgs pea) {
DoPage(pea.Graphics, ForeColor, ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy) {
grfx.SetClip(path);
RectangleF rectf = path.GetBounds();
int xOffset = (int)((cx - rectf.Width) / 2 - rectf.X);
int yOffset = (int)((cy - rectf.Height) / 2 - rectf.Y);
grfx.TranslateClip(xOffset, yOffset);
grfx.DrawImage(image, xOffset, yOffset, image.Width, image.Height);
}
}
</source>
Graphics.TranslateTransform
<source lang="csharp">
using System; using System.Drawing; using System.Drawing.Drawing2D; using System.Windows.Forms;
class RotatedRectangles: Form {
public static void Main()
{
Application.Run(new RotatedRectangles());
}
public RotatedRectangles()
{
Text = "Rotated Rectangles";
ResizeRedraw = true;
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
Pen pen = new Pen(clr);
grfx.PageUnit = GraphicsUnit.Pixel;
PointF[] aptf = { (PointF) grfx.VisibleClipBounds.Size };
grfx.PageUnit = GraphicsUnit.Inch;
grfx.PageScale = 0.01f;
grfx.TransformPoints(CoordinateSpace.Page,
CoordinateSpace.Device, aptf);
grfx.TranslateTransform(aptf[0].X / 2, aptf[0].Y / 2);
for (int i = 0; i < 6; i++)
{
grfx.DrawRectangle(pen, 0, 0, 200, 200);
grfx.RotateTransform(10);
}
}
}
</source>
Graphics.VisibleClipBounds
<source lang="csharp"> using System; using System.Drawing; using System.Windows.Forms;
class DrawOnImage: Form {
Image image = Image.FromFile("Color.jpg");
string str = "www.nfex.ru";
public static void Main()
{
Application.Run(new DrawOnImage());
}
public DrawOnImage()
{
ResizeRedraw = true;
Graphics grfxImage = Graphics.FromImage(image);
grfxImage.PageUnit = GraphicsUnit.Inch;
grfxImage.PageScale = 1;
SizeF sizef = grfxImage.MeasureString(str, Font);
grfxImage.DrawString(str, Font, Brushes.White, grfxImage.VisibleClipBounds.Width - sizef.Width, 0);
grfxImage.Dispose();
}
protected override void OnPaint(PaintEventArgs pea)
{
DoPage(pea.Graphics, ForeColor,ClientSize.Width, ClientSize.Height);
}
protected void DoPage(Graphics grfx, Color clr, int cx, int cy)
{
grfx.PageUnit = GraphicsUnit.Pixel;
grfx.DrawImage(image, 0, 0);
grfx.DrawString(str, Font, new SolidBrush(clr),
grfx.DpiX * image.Width / image.HorizontalResolution, 0);
}
}
</source>
